What is the inner membrane that encloses the embryo in fluid called?Multiple choice question.AllantoisYolk sacAmnionChorion

The inner membrane that encloses the embryo in fluid is called the Amnion.

Explanation:

• Amnion: This is a thin, tough membrane that surrounds the embryo in the womb. It forms a protective sac filled with amniotic fluid, aiding in cushioning and protecting the developing fetus.
• Allantois: This structure is involved in the early fluid exchange between the embryo and its yolk sac, and later contributes to the umbilical cord and urinary bladder.
• Yolk Sac: This sac provides nourishment in early development but does not enclose the embryo.
• Chorion: This is another membrane that surrounds the amnion and plays a role in forming the placenta.

So, the correct option is Amnion.